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Blue-Green Deployment

Blue-green deployment is a release strategy using two identical production environments to enable zero-downtime deployments.

What is Blue-Green Deployment?

Blue-green deployment maintains two identical production environments, with only one serving live traffic. New versions deploy to the idle environment, and traffic switches after validation.

Blue-Green Benefits

Zero-downtime deployment, Instant rollback, Easy testing in production-like environment.

Common Misconceptions

  • "Requires double resources always" - Can spin down idle environment
  • "Only for large deployments" - Works at any scale
  • "Eliminates all deployment risk" - Testing still essential